Warwick pickups

On almost all of the Warwick models, the pickup config changes (a lot) depending on the number of strings-- ex, the 4 might have PJ, 5 JJ and 6 humbuckers, not to mention they move and rotate them different ways too.

That can't be the only reason. On alot of models they have two js on the 4 and 5, with 6 soapbars, but the pickups'll be in completely different positions. Take the thumb bont on for example. On the five, the pickups are moved really close together and the angles are different.

The reason that the pickups are closer together on the 5 and 6 is to prevent phase cancellation on the B string when both pickups are on. A fairly common problem when B strings first came out. There are still some less expensive ones afflicted by this phenomenon.